Tension device



W. GANOVA.

TENSION DEVICE.

. APPLICATION FILED JUNE 19. 1916 1,1 96,079. PatentedAug. 29,1916.

wnum Ocmova 1' a V ATOH/VE).

WILLIAM CANOVA, OF PATERSON, NEW JERSEY.

TENSION DEVICE.

Specification of Letters Patent.

Patented Aug. 29, 1916.

Application filed June 19, 1916. Serial No. 104,400.

To all whom it may concern:

Be it known that I, l/VILLIAM CANOVA, a citizen of the United States,residing at Paterson, in the county of Passaic and State of New Jersey,have invented certain new and useful Improvements in Tension Devices, ofwhich the following is a specification.

This invention relates to shuttle tension means of the class includingtwo coacting series of thread guides one series of which is a part of a.pivoted spring-held device normally held retracted from the other, andits object is to improve the device named by making it cheaper tomanufacture and lighter in weight, and hence better adapted to be usedwith the weaker grades of weft or filling. than the usual form of suchdevices, which are made of twisted wire.

The improved device may be used in any shuttle already equipped withpins or the like affording the stationary series of thread guides. Itmay, if desired, and in the preferred form is stamped out of a singlepiece of metal, which is bent into the proper shape to produce the usuallongitudinal bar and laterally projecting thread-guiding loops, and abearing portion and a spring-attaching arm at one end. I

In the accompanying drawing, Figure 1 is a view showing the improvedtension device in side elevation and operatively arranged in a shuttle,the near wall of which is broken away; Fig. 2 shows the blank from whichthe device is preferably made; Fig. 3 is a top plan view of thecompleted device; Fig. 4 is an end elevation thereof; and, Figs. 5 and 6are side and end elevations of a modified form of the device.

A sheet metal blank is shown in Fig. 2 as comprising the parallel spacedelongated portions a and the integral parallel spaced connectingportions 5 and at the corresponding ends of theportions a the outwardlyprojecting portions 0; at said ends holes d are formed in the material.From this blank the tension device may be formed as follows: Theportions a a, by bending the portions 6 on a common axis parallel withthe portions a, so as to form of the portions Z) annular eyelets e, arebrought into such relation as to lie in close proximity to each otherand side by side, as shown best in Fig. 3, thus producing thelongitudinal or bar part 7 of the device. In order to give the bar part7 the proper strength without increasing weight the portions a a are atsome stage in the operation of forming the device longitudinallychanneled or made substantially semi-cylindrical, preferably so thatwhen said portions are brought side by side to form the bar part f theirconcave sides will be inward, or face each other. It is also preferableto channel the portions 6 so that when they are formed into the loops etheir convex sides will be inward, so that they will present to thethread rounded surfaces and so not abrade or cut the thread.

In the operation of forming the device, the ends of the blank from whichthe portions 0 project are bent out of the plane of the blank so that inthe finished device they appear deflected from each other, as at g g;the portions 9 9- have the holes (Z therein and, being spaced from eachother, they produce a laterally extended bearing to receive the pivotingpin it in the shuttle i. The portions 0 c in the finished device arebrought together to lie side by side and are then together bent into theform of an eye 7', adapted to receive the usual elastic band 70 orequivalent spring which is attached to the pin Z of the shuttle and isnormally adapted to hold the tension device in the position shown inFig. 1, where the device is retracted with reference to the stationaryseries of thread guides m. If desired, only so much of the device asincludes the bar f and thread guiding loops 6 may be used, in which casea wire is bent into such a shape as to produce a bearing portion a, aspring attaching eye 0 and a shank p, the latter being adapted to befitted into one end of the bar 7 as shown in Fig. 5. It will beunderstood that the bearing portion n is adapted to receive the pivotingpin it and the eye 0 to have the spring is attached thereto, this formof the device then being arranged and operating substantially the sameas that shown in Fig. 1.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is:

1. A pivoted shuttle tension device comprising two longitudinal memberslying for the major part of their length parallel and in close proximityto each other and side by side and affording at one end a pivoting pointand annular loops integrally connecting and projecting relativelylaterally from said members at different points in the length thereof.

2. A pivoted shuttle tension device con1- prising two longitudinalsemi-cylindrical members lying for the major part of their lengthparallel and in close proximity to each other and side by side withtheir con- 7 cave sides inward and affording at one end a pivoting pointand loops integrally connecting and projecting relatively laterally fromsaid members at different points in the length thereof.

3. A pivoted shuttle tension device comprising two longitudinal memberslying for the major part of their length parallel and in close proximityto each other and side by side and loops connecting and projectinglaterally from said members at different points in the length thereof,corresponding end portions of said members being deflected away fromeach other and forming in the deflected portions spaced bearizng points.

4. A pivoted shuttle tension device formed of sheet metal and comprisingtwo longitudinal members lying for the major part of their lengthparallel to each other and side by side and affording at one end apivoting point and loops integrally connect ing and projectingrelatively laterally from said 7 members at different points in thelength thereof, one of said members having an integral relativelylateral projection at one end affording a spring-attaching arm.

5. A pivoted shuttle tension device formed of sheet metal and comprisingtwo longitudinal members lying for the major part of their lengthparallel to each other and side by side and affording at one end apivoting point and loops integrally connecting and projecting relativelylaterally from said members at different points in the length thereof,said members having integral relatively lateral projections at one endtogether bent into an eyelet and affording means to which to attach aspring.

In testimony whereof I affix my signature.

WILLIAM GANOVA.

Copies of this patent maybe obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

